validation

Overview

When to Use

• Validating inputs or API payloads with Standard Schema-compatible schemas
• Normalizing sync and async validation paths
• Handling a single

  ValidationError

  type across schema libraries

When Not to Use

• You only need simple, ad-hoc checks without schema validation

Quick Reference

• Guard:

  isStandardSchema

• Validate:

  standardValidate

• Sync only:

  createSyncStandardValidator

• Error:

  ValidationError

Inputs to Request

• Schema library in use (Zod, Valibot, ArkType)
• Throwing vs non-throwing validation
• Desired error shape and handling

Resources

• https://www.zapstudio.dev/packages/validation
• https://www.zapstudio.dev/llms.txt